PT128.S3.Q2

PrepTest 128 - Section 3 - Question 2

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Because Support metallic mirrors absorb some light, Support they waste energy. ████ █████ ███████ █ ████████ ███████ █████████ ██ ███ ██████ █████ █████ ██████ ███ ███████ ███ █████████ ██████ ██ █ ███████ ████████ ███████ ██████ ██ ████ ██ ████████████ ██ █████ ██████████ ██████ ████ ██ ██████████ ████ ██ ████████████ ███████

Summarize Argument

Metallic mirrors can’t be used when minimizing energy loss is important. Why not? The mirrors absorb light and waste energy. This is because electrons in the metallic mirror move when light strikes it. This uses energy and makes the reflected image dimmer.

Identify Conclusion

The conclusion is the practical application of the process described: “metallic mirrors cannot be used in applications in which minimizing energy loss is important”

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2.

Which one of the following ████ ██████████ █████████ ███ ██████████ ████ ███████████

a

Metallic mirrors reduce ███ █████████████ ██ ████████████ ███████

Lasers are just an example the author uses of applications where minimizing energy loss is important. The conclusion does not center on these devices alone.

1%
b

Part of the █████ ███████ ██ ████████ ███████ █████ ██ ██ ████████ ██ █████

This is part of the premises - reasoning for why these mirrors should not be used where minimizing energy loss is important.

0%
c

High-powered lasers require ███████ ████ ████████ ███████

The conclusion centers on these mirrors not being used where minimizing energy loss is important. It does not talk about what mirrors should be used, nor does it focus on lasers alone.

0%
d

A tendency to █████ ██████ ██ ███ ████ ███████████ ████████████ ██ ████████ ████████

The stimulus just discusses that the mirrors do waste energy. It does not draw conclusions about how significant the disadvantage is.

2%
e

Metallic mirrors are ██████████ ███ ████████████ █████ ██ ██ ███████ ██ ████████ ██████ █████

This accurately paraphrases the conclusion. The author establishes that they are unsuitable and explains why.

96%

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